// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

const
    gulp = requireModule("gulp"),
    spawn = requireModule("spawn"),
    env = requireModule("env"),
    os = require("os"),
    which = require("which");

gulp.task("build-site", async () => {
    let maven;
    try {
        maven = await which("mvn");
    } catch (e) {
        let extra;
        switch (os.platform()) {
            case "win32":
                extra = "You may install maven via chocolatey (https://chocolatey.org)";
                break;
            case "darwin":
                extra = "You may install maven via homebrew";
                break;
            default:
                extra = "You should install maven with your package manager";
                break;
        }
        throw new Error(`Unable to find mvn in your path. ${extra}`);
    }

    return spawn("mvn", [ "site" ]);
});

